docs: def get_pygments_style(style):
      """Retrieve a Pygments style by name, by import path or, if `style` is
      already Pygments style, simply return it."""
      if isinstance(style, StyleMeta):
          return style
      if '.' in style:  # by python package/module
          module, name = style.rsplit('.', 1)
          return getattr(__import__(module, None, None, ['__name__']), name)
      else:             # by name
          if style == 'sphinx':
              from sphinx.pygments_styles import SphinxStyle
              return SphinxStyle
          elif style == 'pyramid':
              from sphinx.pygments_styles import PyramidStyle
              return PyramidStyle
          elif style == 'none':
              from sphinx.pygments_styles import NoneStyle
              return NoneStyle
          else:
              return get_style_by_name(style)